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• How to work with scenes in a 2D game

  - by Anearion

  I'm a java/android programmer, but I don't have any experience in game programming, I'm already reading proper books, like "Pro Android Games", but my concerns are more about the ideas behind game programming than the techniques themselves. I'm working on a 2D game, something like Cluedo to let you understand the genre. I would like to know how should I act with the "scenes", for example, a room with a desk, TV, windows and a lamp. I need to make some items tappable and others not. Is it common to use one image (invisible to the user) with every different item a different color, then call the getColor() method on the image? Or use one image as background, and separate images for all the items? If the latter, how can I set the positioning? and should I use imageView or imageButton? I'm sorry if those are really low quality questions, but as "outsider" ( I'm 23 and still finishing my university ) it's pretty hard learn alone.

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• Clicking on clues and other objects in a 2D cluedo like game

  - by Anearion

  I'm a java/android programmer, but I don't have any experience in game programming, I'm already reading proper books, like "Pro Android Games", but my concerns are more about the ideas behind game programming than the techniques themselves. I'm working on a 2D game, something like Cluedo to let you understand the genre. I would like to know how should I act with the "scenes", for example, a room with a desk, TV, windows and a lamp. I need to make some items tappable and others not. Is it common to use one image (invisible to the user) with every different item a different color, then call the getColor() method on the image? Or use one image as background, and separate images for all the items? If the latter, how can I set the positioning? and should I use imageView or imageButton? I'm sorry if those are really low quality questions, but as "outsider" ( I'm 23 and still finishing my university ) it's pretty hard learn alone.

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• A lot of 302 redirects

  - by user3651934

  I have a website for which one month stat shows: Unique Visitors 6274 Total Visitors 7260 Pages visited 9520 Hits 88891 Whats concerns me about is the HTTP status code: 302 Moved temporarily (redirect) 36302 How come 40% hits are being redirected. If it is not normal, what could be the possible reasons? ------------------------ adding more information ------------------------ Ok, here is the code I'm using in my .htaccess file for clean URLs. Is this causing as many as 36302 redirect hits? RewriteCond %{REQUEST_FILENAME}.php -f RewriteRule ^([^\.]+)$ $1.php [L] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^(.+[^/])$ $1/ [R] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?page=$1 [L,QSA] RewriteRule ^(.*)/$ index.php?page=$1 [L,QSA]

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• Public Cloud, co-location and managed services ... what is the cloud?

  - by llaszews

  Recently I have had conversation with a number of people that are selling and implementing 'cloud' solutions. I put cloud in quotes as implementations like co-location (aka co-lo) and managed services (sometimes referred to as 'your mess for less') have become popular options for companies moving to the cloud. These are obviously not pure public cloud offerings and probably more of hybrid cloud implementations as the infrastructure (PasS and IaaS)is dedicated to a specific customer. This eliminates the security, multi-tenancy, performance and other concerns that companies have regarding public cloud. Are co-location and managed services cloud to you? Are they something your company is considering when you think about cloud ?

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• Opensource package for securly allowing users to log in and provide information

  - by JTS

  I have a site written in mostly php and html. I also have a sql database of personal information like names and addresses. I would like my users to be able to log in to my website with a login I can email or snail mail to them, and view and edit their information on my database. Users can currently enter information online I and store it in my database but they can't view or edit stored information. I can add the code to do this, but when I give users the ability to view information I suddenly have a lot more security concerns. Is there an open source package to deal with allowing users to do something like this? Or is there an established convention for this? I know this is a pretty basic question, and there might be some good literature about it that I have yet to find, so if someone can just point me in the direction of some of that information, or better yet give me firsthand some information about this that would be great.

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• How You Helped Shape Java EE 7...

  - by reza_rahman

  I have been working with the JCP in various roles since EJB 3/Java EE 5 (much of it on my own time), eventually culminating in my decision to accept my current role at Oracle (despite it's inevitable set of unique challenges, a role I find by and large positive and fulfilling). During these years, it has always been clear to me that pretty much everyone in the JCP genuinely cares about openness, feedback and developer participation. Perhaps the most visible sign to date of this high regard for grassroots level input is a survey on Java EE 7 gathered a few months ago. The survey was designed to get open feedback on a number of critical issues central to the Java EE 7 umbrella specification including what APIs to include in the standard. When we started the survey, I don't think anyone was certain what the level of participation from developers would really be. I also think everyone was pleasantly surprised that a large number of developers (around 1100) took the time out to vote on these very important issues that could impact their own professional life. And it wasn't just a matter of the quantity of responses. I was particularly impressed with the quality of the comments made through the survey (some of which I'll try to do justice to below). With Java EE 7 under our belt and the horizons for Java EE 8 emerging, this is a good time to thank everyone that took the survey once again for their thoughts and let you know what the impact of your voice actually was. As an aside, you may be happy to know that we are working hard behind the scenes to try to put together a similar survey to help kick off the agenda for Java EE 8 (although this is by no means certain). I'll break things down by the questions asked in the survey, the responses and the resulting change in the specification. APIs to Add to Java EE 7 Full/Web Profile The first question in the survey asked which of four new candidate APIs (WebSocket, JSON-P, JBatch and JCache) should be added to the Java EE 7 Full and Web profile respectively. Developers by and large wanted all the new APIs added to the full platform. The comments expressed particularly strong support for WebSocket and JCache. Others expressed dissatisfaction over the lack of a JSON binding (as opposed to JSON processing) API. WebSocket, JSON-P and JBatch are now part of Java EE 7. In addition, the long-awaited Java EE Concurrency Utilities API was also included in the Full Profile. Unfortunately, JCache was not finalized in time for Java EE 7 and the decision was made not to hold up the Java EE release any longer. JCache continues to move forward strongly and will very likely be included in Java EE 8 (it will be available much sooner than Java EE 8 to boot). An emergent standard for JSON-B is also a strong possibility for Java EE 8. When it came to the Web Profile, developers were supportive of adding WebSocket and JSON-P, but not JBatch and JCache. Both WebSocket and JSON-P are now part of the Web Profile, now also including the already popular JAX-RS API. Enabling CDI by Default The second question asked whether CDI should be enabled in Java EE by default. The overwhelming majority of developers supported the default enablement of CDI. In addition, developers expressed a desire for better CDI/Java EE alignment (with regards to EJB and JSF in particular). Some developers expressed legitimate concerns over the performance implications of enabling CDI globally as well as the potential conflict with other JSR 330 implementations like Spring and Guice. CDI is enabled by default in Java EE 7. Respecting the legitimate concerns, CDI 1.1 was very careful to add additional controls around component scanning. While a lot of work was done in Java EE 6 and Java EE 7 around CDI alignment, further alignment is under serious consideration for Java EE 8. Consistent Usage of @Inject The third question was around using CDI/JSR 330 @Inject consistently vs. allowing JSRs to create their own injection annotations (e.g. @BatchContext). A majority of developers wanted consistent usage of @Inject. The comments again reflected a strong desire for CDI/Java EE alignment. A lot of emphasis in Java EE 7 was put into using @Inject consistently. For example, the JBatch specification is focused on using @Inject wherever possible. JAX-RS remains an exception with it's existing custom injection annotations. However, the JAX-RS specification leads understand the importance of eventual convergence, hopefully in Java EE 8. Expanding the Use of @Stereotype The fourth question was about expanding CDI @Stereotype to cover annotations across Java EE beyond just CDI. A solid majority of developers supported the idea of making @Stereotype more universal in Java EE. The comments maintained the general theme of strong support for CDI/Java EE alignment Unfortunately, there was not enough time and resources in Java EE 7 to implement this fairly pervasive feature. However, it remains a serious consideration for Java EE 8. Expanding Interceptor Use The final set of questions was about expanding interceptors further across Java EE. Developers strongly supported the concept. Along with injection, interceptors are now supported across all Java EE 7 components including Servlets, Filters, Listeners, JAX-WS endpoints, JAX-RS resources, WebSocket endpoints and so on. I hope you are encouraged by how your input to the survey helped shape Java EE 7 and continues to shape Java EE 8. Participating in these sorts of surveys is of course just one way of contributing to Java EE. Another great way to stay involved is the Adopt-A-JSR Program. A large number of developers are already participating through their local JUGs. You could of course become a Java EE JSR expert group member or observer. You should stay tuned to The Aquarium for the progress of Java EE 8 JSRs if that's something you want to look into...

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• First blog post from Surface RT using Microsoft Word 2013

  - by Enrique Lima

  One of the concerns I had in using a Surface RT was the need I have to be able to post.Recently, and not so recently, I have stopped posting. Between getting busy, carrying different devices. Well, it has been hard to do. Tried doing that with an iPad, and I can't say it didn't work, it just didn't work for me. Again, back to the concern with the Surface RT. But, looking at the App Store I started getting that same frustration I had with other platforms that left me with a feeling of "I have to compromise because I am on a SubText platform". So, I stuck to posting from Windows Live Writer (great tool!). This whole situation made me think and rethink my strategy, and then … a big DUH! What about using Microsoft Word 2013 for that? Would it work? So, here is the test!

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• Java Community Process Transparency

  - by Tori Wieldt

  As part of the openness and transparency rules the London Java Community (LJC) and SouJava worked for under JSR-348, the JCP Executive Committee now has a public discussion list where anyone in the community can voice their questions, comments and concerns!Go to http://java.net/projects/jcp-ec/lists to subscribe. Please note that you need to have a java.net account before you can subscribe to the mailing list. "Joining" the project won't get you subscribed to the list.   Cracks in the Ivory Tower - Courtesy Devoxx 2011

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• Building a Java CMS - What Existing Product Should I Use?

  - by walnutmon

  I'm a Java developer and in need of a CMS. I've spent a lot of time reading about, and tinkering with Liferay but am concerned that it doesn't cover two of my three major concerns I need to have many sites with individual domains HTML/CSS designers need to be able to design the website templates, look and feel, and layouts in their own tools without having to worry about writing scripts Site and page building APIs must be understandable so that a custom builder interface can be created and harness the CMS as opposed to hacking it Liferay nails the first bullet point, but the second two appear to be unsolved. Does anyone have experience with a Java CMS that does all three? Or have any idea how to approach the problem if none exists? Has someone has used a Java CMS and has been able to add this functionality give some insight?

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• What do you think about RefactoringManifesto.org?

  - by Gan

  Quite some time ago, on December 19 2010, a site called RefactoringManifesto.org was launched. The site is to voice concerns about refactoring. It lists ten main points as shown below (head over the website to see more details): Make your products live longer! Design should be simple so that it is easy to refactor. Refactoring is not rewriting. What doesn't kill it makes it stronger. Refactoring is a creative challenge. Refactoring survives fashion. To refactor is to discover. Refactoring is about independence. You can refactor anything, even total crap. Refactor – even in bad times! What do you think about this? Would you sign the manifesto? If not, why?

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• FMW Cloud Forum: Chicago

  - by kellsey.ruppel

    The increasing popularity of cloud computing is changing how enterprise systems are managed and organized--and that change does not stop at the datacenter. Cloud computing is also changing how enterprises develop and build business applications, a shift that will require unprecedented collaboration across the enterprise, from developers to the user community. Are you currently building applications in the Cloud? What concerns or challenges do you forsee in doing so? Oracle experts will be discussing these topics and how with a user experience platform you can leverage new collaborative practices to design and build applications that deliver business value and meet exacting user requirements. Join us in Chicago on June 29th to learn more and hear from Oracle experts. Not located in Chicago? We're coming to a city near you!

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• Webcast: SANS Institute Product Review of Oracle Identity Manager 11gR2

  - by B Shashikumar

  Translating the IT-centric, directory based view of access and authorization into the process-driven concerns of business users inevitably creates unique challenges. Enterprises struggle to determine which users have access to what resources and what they are doing with that access. Enforcing governance controls is critical to reduce the risk that an employee or malicious third party with excessive access will take advantage of that access. Dave Shackleford, SANS analyst, recently reviewed the User Provisioning capabilities of Oracle Identity Manager 11gR2. In this webcast, attendees will hear from Dave and other Oracle and customer experts on: The key challenges associated with implementing self-service user provisioning Oracle’s unique online “shopping cart” model for self-service access request Real world case study of user provisioning Best practices for deployment Register today, for this complimentary webcast, hosted by The SANS Institute. Attendees will be among the first to receive a new SANS Analyst Whitepaper on this subject. When: Thur Sep 27  9am PT/12p ET Where: Register here

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• Trying to turn an old computer into a server. Where do I start?

  - by Stanton.Sculpture

  My old computer is a mac powerbook g4 that I am considering turning into an Ubuntu Server for my house of eight to share movies and music and whatever. I've never even thought about doing this kind of stuff before so I don't even know where to start. Can someone point me in the right direction? My Concerns: Most of my house mates have macs. Will there be compatibility issues? Can I make it a wireless network? My old powerbook g4 might not have the balls. Money Thanks!

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• Write data to SQL Server directly from BizTalk or use external service?

  - by dlongest

  An external source will be sending us XML data that BizTalk will pick up and transform into an internal schema. We need this data to be loaded into a SQL Server database as we're going to expose some of the data to our web front-end via a custom WCF service. The question is: what is the recommended approach for doing something like this? Options we're considering are having BizTalk write to the database directly or having BizTalk call a custom WCF service which would handle the save operation. Another briefly considered idea was having BizTalk write to an MSMQ and have a custom service pull from there and store it in the database. What are some of the guidelines or questions that should be asked in assessing these options? There are concerns related to overhead from calling the extra service, duplication of efforts if the schema is modified in the future (which it will be to some extent), and simply the best way to design within a service-oriented architecture that we're struggling with.

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• Is the escaping provided by the Google-Gson library enough to ensure a safe JSON payload?

  - by Lifetime_Learner

  I am currently using the Google-Gson library to convert Java objects into JSON inside a web service. Once the object has been converted to JSON, it is returned to the client to be converted into a JSON object using the JavaScript eval() function. Is the character escaping provided by the Gson library enough to ensure that nothing nasty will happen when I run the eval() function on the JSON payload? Do I need to HTML Encode the Strings in the Java Objects before passing them to the Gson library? Are there any other security concerns that I should be aware of?

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• nut (UPS) and SSL certificates

  - by Mausy5043

  Today I installed nut on my Ubuntu server (14.03). $ uname -a Linux boson 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux The UPS is connected to another server (called neutron), so I use nut-client to keep tabs on the UPS state. When I do sudo upsc [email protected] I get: Init SSL without certificate database battery.charge: 15 battery.charge.low: 10 battery.charge.warning: 50 battery.date: not set battery.mfr.date: 2012/11/27 : The first line of the output concerns me. I've not seen this on other installations of nut on Debian-based servers. What can I do to get rid of that line? EDIT: This "Init SSL without certificate database" is extra annoying because it is not part of the output of upsc and therefore I cannot grep it out.

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• How much do they study in the best universities, relative to the other universities?

  - by Velizar Hristov

  In my university, our total required weekly attendance (for lectures and tutorials/similar) is about 12 hours. It was like that in the first year, and then everything required extremely little effort - I believe that if I invested as much efforts as someone who is studying for medicine or law, I could have learnt everything for 1-2 months - if not less! Now I'm second year and it doesn't look like it's going to be too different. This concerns me about the people who study in Oxford, Cambridge or Imperial College. It would be weird if they study that little, and it would be very concerning if they do study very hard, because this would mean that by the end of the year, their first year students will be better than our average third year student. Which is bad news for me, given that I share the market with them. I know the question can't have an absolutely accurate answer, but it can still be answered quite definitely, and it's relevant to many people.

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• How often do CPUs make calculation errors?

  - by veryfoolish

  In Dijkstra's Notes on Structured Programming he talks a lot about the provability of computer programs as abstract entities. As a corollary, he remarks how testing isn't enough. E.g., he points out the fact that it would be impossible to test a multiplication function f(x,y) = x*y for any large values of x and y across the entire ranges of x and y. My question concerns his misc. remarks on "lousy hardware". I know the essay was written in the 1970s when computer hardware was less reliable, but computers still aren't perfect, so they must make calculation mistakes sometimes. Does anybody know how often this happens or if there are any statistics on this?

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• Drive By Download Issue

  - by mprototype

  I'm getting a drive by download issue reported on www.cottonsandwichquiltshop.com/catalog/index.php?manufacturers_id=19&sort=2a&filterid=61 reported from safeweb.norton.com when I scan the root url. I have dug through the entire site architecture, and code base and removed a few files that were malicious, i upgraded the site's framework and fixed the security holes (mostly sql injection concerns)..... However this one threat still exists and I can't locate it for the life of me, or find any valid research or information on removing this type of threat at the server level, mostly just a bunch of anti-virus software wanting to sell you on their ability to manage it on the client end. PLEASE HELP Thanks.

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• https (SSL) instead of http

  - by user1332729

  I am building myself a new website, out of privacy and security concerns I am contemplating trying to make it https only. It will be mobile-friendly using media queries but I am concerned--especially for mobile users--about the increased bandwidth. How much will doing so increase my bandwidth or slow load times? For pages where I'm not transferring sensitive information, should I leave external links (to a jQuery library, or a web font for instance) in http? Simply put, I have read articles saying the entire web would be more secure if everything was SSL but my actual knowledge of implementation is limited to payment gateways and log-in pages and such. I apologize for the open-ended nature of the question but anything, even just simple answers to the specific questions is welcomed.

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• Installing programs from a download

  - by user7274

  Hello, my name is Anthony and I'm new to Ubuntu and any other Linux OS for that matter. My question concerns downloading a program, and then installing it. The program is called Remotedroid, it lets you use your phone as a wireless keyboard and mouse. I'm use to windows automatically starting setup upon download and cant figure out how to initiate the install in Ubuntu. The programs website says its compatible with Linux OS and the readme file says to just click the extension remotedroidserver.jar to use, but it wont work and none of the files do anything. I've unzipped all the files and my Java is all up to date as far as i know, I think. I'm just not getting how to run a setup in Ubuntu. I looked around this site for the answer but came up with nothing so if someone could maybe offer some insight I would be grateful. Thank you.

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• New Java EE 6 Hands-On lab, Devoxx-approved!

  - by alexismp

  A new Java EE 6 HOL (Hands-On Lab) was successfully used yesterday at Devoxx with a room packed with enthusiast conference participants. This is new material which covers a lot of Java EE ground in a single document. As it is the case for most GlassFish-related labs, the list of software requirements is dead-simple and short: a recent JDK (6 or 7) and NetBeans 7.x ("Java EE" or "All") which comes with GlassFish. Of course GlassFish can also be downloaded separately and used from other IDEs such as Eclipse and IntelliJ or even (Emacs). The didactic nature of the HOL document should make it useful for anyone interested in learning Java EE 6 on their own time and pace. If you have feedback about the content or about GlassFish, make sure you voice your concerns (or praises) to the GlassFish Users alias as indicated in the document. Feedback will be taken into account in the form of updates to the document as well as enhancements to GlassFish (ideally in 3.1.2).

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• Social Media JSR 357 NOT approved by Executive Committee

  - by alexismp

  JSR 357 (Social Media API) has not passed the initial ballot which means, according to the JCP rules, that "the JSR submitter(s) who may revise the JSR and resubmit it within 14 days". Given the comments associated with the negative votes, it may be challenging for the submitters to address the concerns about the scope assessed by many as being too wide. Standardization is a difficult task and the JCP (the Executive Committee in fact) played its role by pointing out the challenges ahead of such a JSR as it was envisioned by its submitters, and thus the risk of never completing. If anything this proves that the JCP is working as expected. For those disappointed that Java will not get a standard "Social Media API" (for now at least), let me remind you of the recent open-sourcing of DaliCore.

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• Is there a ppa or repository where we can update LibreOffice to version 3.6?

  - by josircg

  On http://www.libreoffice.org/download/ there is only RPM version - when great majority of Desktop Linux users are using systems based on APT... ppa:libreoffice/ppa seems to be very outdated with version 3.5 It's frustating to see several fixes on Windows version and Ubuntu versions so outdated... People generally reply as: we don't update due to security/stability reasons, etc example 1 example 2 why don't you compile yourself ? For those easy answers, I generally reply: let me decide which version to use at my own risk. I just want to try a newer version and I trust on LibreOffice devs. I understand that update a core lib is very dangerous but Libreoffice is an user application and it don't just break the whole system. Why don't I compile ? Because I am a regular user and don't have time to learn it. I would love to have this time but unfortunately, I don't have. Red Hat/Fedora guys have the same concerns but they update their LibreOffices...

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• Someone who needs inspiration [on hold]

  - by Anestis

  My apologies if it is not a code problem. However, it is a problem that concerns programming. As a recently graduated Computer Systems Engineering I have gained some basic knowledge with programming using JAVA. I have realised 2 things, the first one is that I realy liked programming and the second is that I am not good at all. More specifically, I struggle on problem solving and when i face complex tasks I feel lost. Every day , I spend some quality time doing simple exercises in order to be more familiar with JAVA. My target is to become a good programmer and find a job on a software company. I am afraid maybe " I dont have it" thats why I am asking you , what should I do? Should i give up? Thanks in advance, Anestis

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